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hammerstone

   Also found in: Wikipedia 0.14 sec.
ham·mer·stone  (hmr-stn)
n. Archaeology
A stone or cobble used as a pounding or pecking tool.
hammerstone  (hmr-stn)
A hand-held stone or cobble used by hominids perhaps as early as 2.5 million years ago as a crude pounding or pecking tool. Hammerstones were also used by early humans in striking flakes from stone cores to produce core tools.


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